pass1.h

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C头文件 代码 · 共 276 行

/*
*	@(#)pass1.h	4.1	(ULTRIX)	7/17/90
*/

/************************************************************************
 *									*
 *			Copyright (c) 1986 by				*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/

/************************************************************************
*
*			Modification History
*
*	David Metsky		15-Jan-86
*
* 001	Added from BSD 4.3 version as part of upgrade.
*
*	Based on:	pass1.h		4.2		85/08/22
*
*************************************************************************/

#ifndef _PASS1_
#define	_PASS1_

#include "macdefs.h"
#include "manifest.h"

/*
 * Symbol table definition.
 *
 * Colliding entries are moved down with a standard
 * probe (no quadratic rehash here) and moved back when
 * entries are cleared.
 */
struct	symtab {
#ifndef FLEXNAMES
	char	sname[NCHNAM];
#else
	char	*sname;
#endif
	struct	symtab *snext;	/* link to other symbols in the same scope */
	TWORD	stype;		/* type word */
	char	sclass;		/* storage class */
	char	slevel;		/* scope level */
	char	sflags;		/* flags, see below */
	int	offset;		/* offset or value */
	short	dimoff;		/* offset into the dimension table */
	short	sizoff;		/* offset into the size table */
	int	suse;		/* line number of last use of the variable */
};

/*
 * Storage classes
 */
#define SNULL		0		/* initial value */
#define AUTO		1		/* automatic (on stack) */
#define EXTERN		2		/* external reference */
#define STATIC		3		/* static scope */
#define REGISTER	4		/* register requested */
#define EXTDEF		5		/* external definition */
#define LABEL		6		/* label definition */
#define ULABEL		7		/* undefined label reference */
#define MOS		8		/* member of structure */
#define PARAM		9		/* parameter */
#define STNAME		10		/* structure name */
#define MOU		11		/* member of union */
#define UNAME		12		/* union name */
#define TYPEDEF		13		/* typedef name */
#define FORTRAN		14		/* fortran function */
#define ENAME		15		/* enumeration name */
#define MOE		16		/* member of enumeration */
#define UFORTRAN 	17		/* undefined fortran reference */
#define USTATIC		18		/* undefined static reference */

/* field size is ORed in */
#define FIELD		0100
#define FLDSIZ		077
#ifndef BUG1
extern	char *scnames();
#endif

/*
 * Symbol table flags
 */
#define SMOS		01		/* member of structure */
#define SHIDDEN		02		/* hidden in current scope */
#define SHIDES		04		/* hides symbol in outer scope */
#define SSET		010		/* symbol assigned to */
#define SREF		020		/* symbol referenced */
#define SNONUNIQ	040		/* non-unique structure member */
#define STAG		0100		/* structure tag name */

/*
 * Location counters
 */
#define PROG		0		/* program segment */
#define DATA		1		/* data segment */
#define ADATA		2		/* array data segment */
#define STRNG		3		/* string data segment */
#define ISTRNG		4		/* initialized string segment */
#define STAB		5		/* symbol table segment */


#ifndef ONEPASS
#include "ndu.h"
#endif


#ifndef FIXDEF
#define FIXDEF(p)
#endif
#ifndef FIXARG
#define FIXARG(p)
#endif
#ifndef FIXSTRUCT
#define FIXSTRUCT(a,b)
#endif

	/* alignment of initialized quantities */
#ifndef AL_INIT
#define	AL_INIT ALINT
#endif

/*
 * External definitions
 */
struct sw {		/* switch table */
	CONSZ	sval;	/* case value */
	int	slab;	/* associated label */
};
extern	struct sw swtab[];
extern	struct sw *swp;
extern	int swx;

extern	int ftnno;
extern	int blevel;
extern	int instruct, stwart;

extern	int lineno, nerrors;

extern	CONSZ lastcon;
extern	float fcon;
extern	double dcon;

extern	char ftitle[];
extern	char ititle[];
extern	struct symtab stab[];
extern	int curftn;
extern	int curclass;
extern	int curdim;
extern	int dimtab[];
extern	int paramstk[];
extern	int paramno;
extern	int autooff, argoff, strucoff;
extern	int regvar;
extern	int minrvar;
extern	int brkflag;
typedef union {
	int intval;
	NODE * nodep;
	} YYSTYPE;
extern	YYSTYPE yylval;
extern	char yytext[];

extern	int strflg;

extern	OFFSZ inoff;

extern	int reached;

/* tunnel to buildtree for name id's */
extern	int idname;

extern	NODE node[];
extern	NODE *lastfree;

extern	int cflag, hflag, pflag;

/* various labels */
extern	int brklab;
extern	int contlab;
extern	int flostat;
extern	int retlab;
extern	int retstat;
extern	int asavbc[], *psavbc;

/* declarations of various functions */
extern	NODE
	*buildtree(),
	*bdty(),
	*mkty(),
	*rstruct(),
	*dclstruct(),
	*getstr(),
	*tymerge(),
	*stref(),
	*offcon(),
	*bcon(),
	*bpsize(),
	*convert(),
	*pconvert(),
	*oconvert(),
	*ptmatch(),
	*tymatch(),
	*makety(),
	*block(),
	*doszof(),
	*talloc(),
	*optim(),
	*fixargs(),
	*clocal();
OFFSZ	tsize(),
	psize();
TWORD	types();
double	atof();
char	*exname(), *exdcon();

#define checkst(x)

#ifndef CHARCAST
/* to make character constants into character connstants */
/* this is a macro to defend against cross-compilers, etc. */
#define CHARCAST(x) (char)(x)
#endif
#endif

/*
 * Flags used in structures/unions
 */
#define SEENAME		01
#define INSTRUCT	02
#define INUNION		04
#define FUNNYNAME	010
#define TAGNAME		020

/*
 * Flags used in the (elementary) flow analysis ...
 */
#define FBRK		02
#define FCONT		04
#define FDEF		010
#define FLOOP		020

/*
 * Flags used for return status
 */
#define RETVAL		1
#define NRETVAL		2

#define NONAME		040000		/* marks constant w/o name field */
#define NOOFFSET	(-10201)	/* mark an offset which is undefined */